No. Your Aunt's husband is related to her by her marriage, and therefore he is related to you and your mother by the marriage also. There is no blood relation. Blood relation means containing the same blood line.
brother-in-law
Your mothers sisters Granddaughter is your second cousin
The relation of the mother;s sister to daughter is niece-aunts.
I think it is appropriate to call him your brother.
What family members your is fathers mothers daughters sons sisters
The word for uncle in Hindi is "चाचा" (chacha) for father's brother and "मामा" (mama) for mother's brother.
sisters in law
If your niece's is by your sister but the brother is by your sisters new husband & another woman there would be no blood relation. If not then he's the nephew
You!
sisters
Sisters - 1991 Sins of the Mothers - 3.5 was released on: USA: 24 October 1992
She is your sister-in-law.